Question

15+20-30=1)...+8-9=2)...

45-8+12=3)...-49=4)...

1)...+2)...+3)...+4)...=...

Answer 1

`15+20-30=5`

`5+8-9=4`

`45-8+12=49`

`49-49=0`

`=> 5+4+49=58`.

Answer 2

thanks

Answer 3

15+20-30=5

3+8-9=2

45-8+12=49

53-49=4

5+2+49+4=60

Chúc bạn học tốt.

Answer 4

15+20-30=5

3+8-9=2

45-8+12=49

53-49=4

5+2+49+4=60

Answer 5

bài làm

.ok

Answer 6

kết quả cuối cùng là 58

Answer 7

=58

nhé bạn

 

 

Answer 8

15 + 20 - 30 = 5

5 + 8 - 9 = 4

45 - 8 + 12 = 49

49 - 49 = 0

=>5 + 4 + 49 = 58

Answer 9

15+20−30=5

5+8−9=4

45−8+12=49

49−49=0

⇒5+4+49=58.

Answer 10

.

Answer 11

15 + 20 − 30 = 5

5 + 8 − 9 = 4

45 − 8 + 12 = 49

49 − 49 = 0

⇒ 5 + 4 + 49 = 58 .

Answer 12

\(\text{15 + 20 − 30 = 5}\)

\(\text{5 + 8 − 9 = 4}\)

\(\text{45 − 8 + 12 = 49}\)

\(\text{49 − 49 = 0}\)

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